Catalog index cleanup blitz planned

I am planning to deal with all of the following TODO items today:

* pg_database should have unique indexes on oid and on datname.

* pg_shadow should have unique indexes on usename and on usesysid.

* pg_am should have unique index on oid

* pg_opclass should have unique index on oid

* pg_amproc should have unique index on amid+amopclaid+amprocnum

* Remove pg_rewrite's unnecessary index on oid, delete unused RULEOID
syscache.

* Remove index on pg_listener for performance reasons.

* Change pg_attrdef's nonunique index on adrelid into a unique index
on adrelid+adnum.

Have I missed anything in this line?

regards, tom lane